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Current Limit

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6

SLVUBA6 – October 2017

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Copyright © 2017, Texas Instruments Incorporated

TPS1HA08x Evaluation Module

ADVANCE INFORMATION

Figure 4. TPS1HA08xEVM Bottom Layer (Bottom View)

5

Current Limit

When I

OUT

reaches the current limit threshold, I

CL

, the device can switch off immediately (versions A, B,

and E), or the device can remain enabled and limit I

OUT

(versions C and D). The TPS1HA08-Q1 will be

available in multiple variants which collectively allow both of these behavior options. In the case that the
device remains enabled (and limits I

OUT

), the thermal shutdown or energy limit protection feature may be

triggered due to the high amount of power dissipation in the device.

6

Current Sense

High-accuracy current sensing allows real-time monitoring and more diagnostics without further
calibration. A current mirror is used to source a 1/4600 of the load current on SNS pin. The 1-k

Ω

R10

resistor is connected to the SNS pin to convert the current source into a voltage:

V

SNS

= 1000 × I

OUT

/ 4600

Summary of Contents for TPS1HA08x

Page 1: ...ntents 1 Introduction 2 1 1 Descriptions 2 1 2 Applications 2 1 3 Features 2 2 TPS1HA08x Schematic 3 3 Connections Descriptions 4 3 1 Connectors and Test Points 4 3 2 Jumpers 4 4 TPS1HA08x EVM Assembl...

Page 2: ...e sense pin between different devices 1 2 Applications The EVM is used in the following applications High side relay drivers High side power switch for submodule power supply Bulb driver General resis...

Page 3: ...Green LED1 4 70k R8 IOUT Max DC 8A VIN 3V 43V T1 108 0740 001 T3 108 0740 001 SH J14 SNS SH J6 0 1uF C5 GND 4 7uF C6 D2 VCC SH J10 LDO_VCC VBB LDO to Power I O pins V_ 5V GND OUT 1 DNC 2 PG 3 4 EN 5...

Page 4: ...ATCH only use when J7 is not connected to 5 V or GND SNS Test point used to measure SNS LDO_VCC Test point used to apply power to the 5 V TPS7A1650DGNR LDO only use when J6 is disconnected GND_IC This...

Page 5: ...w the design of the TPS1HA08x PCB The EVM was designed using FR4 material on a four layer 2s2p board All components are located in an active area on the top side and active traces are provided in the...

Page 6: ...TPS1HA08 Q1 will be available in multiple variants which collectively allow both of these behavior options In the case that the device remains enabled and limits IOUT the thermal shutdown or energy l...

Page 7: ...White TH H1 H2 H3 H4 4 NY PMS 440 0025 PH Machine Screw Round 4 40 x 1 4 Nylon Philips panhead H5 H6 H7 H8 4 1902C Standoff Hex 0 5 L 4 40 Nylon J1 J2 J7 3 5 146278 3 Header 100mil 3x1 Tin TH J3 1 PE...

Page 8: ...tion Module ADVANCE INFORMATION Table 3 TPS1HA08x Bill of Materials continued Designator QTY Value Part Number Description U2 1 TPS7A1650DGNR Single Output LDO 100 mA Fixed 5 V Output 3 to 60 V Input...

Page 9: ...set forth above or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that...

Page 10: ...the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain great...

Page 11: ...t the EVM user guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even with the...

Page 12: ...OST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF...

Page 13: ...TI Resource NO OTHER LICENSE EXPRESS OR IMPLIED BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD...

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